" Q.9Find the value of the polynamial "5x-4x^(2)+3" all "x

Find the value of : 4x^(3)-5x^(2)-6x+7 when x=3

Find all zeroes of the polynomial 2x^(4)-9x^(3)+5x^(2)+3x-1 if two of its zeroes are 2+sqrt(3) and 2-sqrt(3)

Find all zeros of the polynomial x^3-5x^2-9x-5=0 , If 2 + I is a root.

Find all zeroes of the polynomial 2x^4-9x^3+5x^2+3x-1 if two of its zeroes are 2+sqrt(3) and 2-sqrt(3)

Find all zeroes of the polynomial 2x^4-9x^3+5x^2+3x-1 if two of its zeroes are 2+sqrt(3) and 2-sqrt(3)

(a) If x : y = 3 : 4 , then find the value of the ratio (2x + y) : ( 9x - 2y) . (b) If x : y = 5 : 4 , then find the value of the ratio (x^(2) + xy) : (x^(2) - xy) .

Find all the common zeroes of the polynomials x^3+5x^2-9x-45 and x^3+8x^2+15x

7.Find the greatest value of 3+5x-2x^(2) for all real values of x .

If the zeroes of the polynomial x^(2)+px+q are double in the value of the zeroes of 2x^(2)-9x+4 , find the values of p and q.

Find the value of a if the division of ax^(3)+9x^(2)+4x-10 by (x+3) leaves a remainder 5.